The valve fitted closely in a recess against an opening in a pipe, is generally (A) Wedge shaped circular disc (B) Spherical disc (C) Parallelepiped disc (D) Conical shaped circular disc

The valve fitted closely in a recess against an opening in a pipe, is generally
(A) Wedge shaped circular disc
(B) Spherical disc
(C) Parallelepiped disc
(D) Conical shaped circular disc
by

1 Answer

Answer :

(A) Wedge shaped circular disc
by

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Last Answer : Both A and C

Pick up the incorrect statement regarding a master trap from the following: (A) It is provided in between the lower end of the house drain and the street sewer (B) It is provided a cleaning eye at the top of the trap (C) The mica flap valve which opens inwards only, is fitted at the top of the inlet pipe (D) The water seal is less than that of ordinary traps

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Last Answer : (D) The water seal is less than that of ordinary traps

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If two tensile forces mutually perpendicular act on a rectangular parallelepiped bar are equal, the resulting elongation of the pipe, is (A) (P/E) (1 - m) (B) (E/P) (m -1) (C) (E/P) (1 - m) (D) (P/E) (1 + m)

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A 2" gate valve fitted in a pipe is replaced by a similar globe valve. Pressure drop in gate valve was Δp. For the same discharge, the pressure drop across globe valve is (A) Δp (B) < Δp (C) > Δp (D) Δp

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In rabbit food does not normally enter into the wind pipe because during feeding (a) Epiglottis and tongue cover the glottis (b) Nodule called cartilage of santorini plug the larynx (c) The cartilage called arytenoid lie between larynx and glottis (d) The circular muscles at the front of trachea contract and close its opening

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Which one of the following is correct? [IES-2008] A hydrodynamic slider bearing develops load bearing capacity mainly because of- (a) Slider velocity (b) wedge shaped oil film (c) Oil compressibility (d) oil viscosity

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For elasto-hydrodynamic lubrication (A) There should be relative motion between the surfaces of the journal and the bearing and wedge shaped clearance space (B) There should be external source like pump to supply lubricant under pressure (C) There should be elastic deformation of the parts in contact (D) There should be metal to metal contact

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Interference pattern is observed in wedge-shaped film for monochromatic light. Now monochromatic light is replaced by white light. What will be the effect on interference pattern? (a) It will turn to dark (b) It will turn to bright (c) Bands will disappear (d) It will be a mixture of all colors

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Interference pattern is observed in wedge-shaped film and bandwidth is noted. Now the angle of wedge is reduced to zero. What will be the effect on Bandwidth? (a) Bandwidth increases (b) Bandwidth decreases (c) Bands will disappear (d) There will not any effect

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Interference pattern is observed in wedge-shaped film and bandwidth is noted. Now the thin film is replaced by the film of higher refractive index. What will be the effect on bandwidth? (a) Bandwidth increases (b) Bandwidth decreases (c) Bands will merge (d) There will not any effect

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What is the nature of interference pattern at the contact edge of wedge shaped film (a) Always bright (b) Always dark (c) Bright or dark depending upon the thickness of other end (d) Bright or dark depending upon the wavelength of the light

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In wedge shaped film the interference pattern has nature (a) Parallel to the end where thickness is non-zero (b) Perpendicular to contact edge (c) Parallel to contact edge (d) Perpendicular to the end where thickness is non-zero

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A wedge shaped thin has (a) Non-uniform thickness (b) Zero thickness at one end and it increasing towards other end (c) Zero thickness at both ends (d) Thickness increase and decrease alternately

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A child consumed an ice-cream of inverted right-circular conical shape from the top and left only 12.5% of the cone for her mother. -Maths 9th

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For trunk and out-fall, the type of sewers generally used, is A. Standard egg shaped B. Circular shaped C. Horse shoe shaped D. Parabolic shaped

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Pick up the incorrect statement from the following: (A) The flow in strainer type wells is radial (B) The flow in cavity type wells in spherical(C) In strainer type wells, area of flow depends upon the length of the strainer pipe (D) In cavity type wells, area of flow depends upon the size of the cavity

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A mercury (specific gravity = 13.6) manometer connected across an orificemeter fitted in a pipe shows a manometer reading of 2 cms. If the manometer liquid is changed to carbon tetrachloride (specific gravity = 1.6), then for the same flow rate of water the new manometer reading will be __________ cms. (A) 17 (B) 42(C) 84 (D) 1.8

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Last Answer : (D) All the above 

The magnitude of water hammer depends upon the (A) Elastic properties of the pipe material (B) Elastic properties of the liquid flowing through the pipe (C) Speed at which the valve is closed (D) All of the above

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The hammer blow in pipes occurs when (A) There is excessive leakage in the pipe (B) The pipe bursts under high pressure of fluid(C) The flow of fluid through the pipe is suddenly brought to rest by closing of the valve (D) The flow of fluid through the pipe is gradually brought to rest by closing of the valve

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In a pressure penstock 4500 m long, water is flowing at a velocity of 4 m/s. If the velocity of the pressure wave traveling in the pipe, due sudden complete closure of a valve at the downstream end, is given as 1500 m/s, what would be the period of oscillation in second under frictionless conditions? (a) 6 (b) 8 (c) 9 (d) 11

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What is the volume of a parallelepiped whose sides are given by the vectors a 3i plus wj plus k b -i plus 3j and c 2i plus 2j plus 5k?

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Last Answer : What is the answer ?